OK here we go..I try-ed to find all the info on this before I bought my coils For my 78 850. Then asked Steve at bevel heaven and this is what he said..
5 ohm for everything but race bike installation….
Steve Allen www.BevelHeaven.com
But I do have the dual spark heads. But Don't Know For sure??
Maybe you should ask Ed Mulch,No offense to you Greg! I may (WILL) need your help Later!